Mec Gunsmith And Reloading Equipment. The "Power Ring" collet resizer returns bases to factory specification regardless of whether they're brass or steel heads high or low base. Adjustable to 3" shells. Additional die sets (to change gauges) are available. E-Z Prime primer feeder included on 10 12 16 20 28 gauge models. Specifications for Mec Gunsmith And Reloading Equipment 812012: Manufacturer: MEC Fabric/Material: Cast Iron Additional Features: Shotshell Reloading Press Package Contents: Mec Gunsmith And Reloading Equipment 812012 The Mec Mayville Size Master Shotshell Reloading Press For 12 Ga 812012 is a quality addition to the MEC lineup. For more great deals on Reloading Presses by MEC please browse our Mec Reloading Equipment page. Mec Gunsmith And Reloading Equipment 812012